Final answer:
The isotopes ^6 v3 Li, ^7 V3 Li, and ^8 v3 Li differ in the number of neutrons they have, with ^6 v3 Li having 2 less neutrons than ^8 v3 Li, and ^7 v3 Li having 1 less neutron than ^8 v3 Li.
Step-by-step explanation:
The difference between the isotopes ^6 v3 Li, ^7 V3 Li, and ^8 v3 Li lies in the number of neutrons they have. ^6 v3 Li has 2 less neutrons than ^8 v3 Li, while ^7 v3 Li has 1 less neutron than ^8 v3 Li. The number of protons and electrons remains the same for all isotopes of lithium, which is 3. It is important to note that in nature, only certain isotopes exist, meaning that isotopes with 2 or 5 neutrons do not exist for lithium.